Example File: http://grasshopper3d.googlegroups.com/web/visual_A3_00.ghx?gsc=bhpf5AsAAADmouGYQ2Mj2TkAHZEv0N6K
What happens is, that the Surface from Edge Node doesn't seem to response to the fact, that the edge curves are input as a stream of two curves each. When using a serie of numbers there are some rings that aren't rings, but filled circles. When using the slider every ring is drawn correct. Are all nodes in 0.6.000000000000000012 using the new data tree structure? If so, this should be a bug.
